George a



(No Model.)

G. A. TOWNSEND.

FIRE ALARM.

No. 597,128. Patented Jan. 11,1898.

WI TNESSES.

UNITED STATES PATENT FFICE.

GEORGE A. TOWNSEND, OF UTIOA, NEXV YORK, ASSIGNOR OF ONE-HALF TO FRANKP. BAKER, OF SAME PLACE.

FIRE-ALARM.

SPECIFICATION forming part of Letters ."Patent No. 597,128, datedJanuary 11, 1898.

Application filed May 18, 1897. Serial No. 637,038. (No model.)

T0 at whom it may concern:

Be it known thatI, GEORGE A. TOWNSEND, a citizen of the United States,residing at Utica, in the county of Oneida and State of New York, haveinvented certain new and useful Improvements in Fire-Alarms, of whichthe following is a full and complete specification, such as will enablethose skilled in the art to which it appertains to make and use the Thisinvention relates to firealarms; and the object thereof is to provide anelectric fire-alarm which is adapted to be used in buildings of variouskinds and classes, and particularly in dwellings and the various roomsor compartments thereof.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which- Figure 1 is asectional side view of the device which I employ, the electricalconnections being omitted; Fig. 2, a section on the line 2 2 of Fig. 1,showing also the electrical connections; and Fig. 3, a perspective viewof a detail of the construction.

In the drawings forming part of this specification the separate parts ofmy improve ment are designated by the same numerals of reference in eachof the views, and in the practice of my invention I provide a device ofthe class herein specified, which consists of a base-plate 5, which isadapted to be secured to any suitable support, and secured to or formedon the opposite sides of said base-plate are supports or standards 6 and7 which are connected at their tops or outer ends by a curved plate S,totheunder side of which is secured,at one end thereof,a spring 9.

The support or standard 6 is provided at its opposite side with inwardlydirected flanges 10, and pivoted between said flanges 10, near the upperor outer ends thereof, as shown at 11, is an arm 12, and secured to orconnected with the inner side of the standard or support is asupplemental plate 13,to which is soldered an angular support let, onwhich the free end of the pivoted arm 12 rests.

The angular support 14 is connected with the supplemental plate 13 bysolder, which will melt under a comparatively low degree of heat, andthe supplemental plate 13 is connected with the plate or arm 7 by meansof a prong 15, which is formed thereon and which passes through a slotor opening in the arm or plate 7, as clearly shown in Figs. 1 and 2. Ialso provide an oblong plate 16, which is connected with and insulatedfrom the baseplate 5, this connection being made by means of a screw 17,and said screw is insulated from the supplemental plate 10, as clearlyshown in Fig. 1, and the plate 10 is provided at one end thereof with anupwardly-directed arm 17, which is provided with a binding screw or post18, and atits opposite end with an angular arm 19, which will serve toarrest the downward movement of the pivoted arm 12 when the support 14-is disconnected from the plate 13.

One of the flanges 10 of the upright plate or arm 6 is also providedwith a bindingscrew 20, and in Fig. 2 I have shown a battery 21, whichis connected with said binding screw or post 20 by a wire 22, and withthe binding screw or post 18 by means of a wire 23, and in the circuitthus formed is placed an electric alarm or hell 24., and the operationwill be readily understood from the foregoing description when taken inconnection with the accompanying drawings and the following statementthereof.

The pivoted arm 12 is normally supported in the position shown in Fig.1, and the spring 9 bears thereon, and if at any time this de viceshould become heated to a degree sufficient to melt the solder by whichthe support 1% is connected with the plate 13 the pivoted arm 12 woulddrop onto the angular arm 10 of the plate 16, or to be forced intoconnection therewith by the spring 9, and the circuit would be completedthrough the battery 21 and the alarm or bell 2A1, and said alarm wouldbe sounded, as will be readily understood.

This device is simple in construction and op eration and is perfectlyadapted to accomplish the result for which it is intended, and saiddevice is also comparatively inexpensive and may be used whereverelectrical alarms of this class are requirechand it will be apparentthat changes in and. modifications of the construe tion herein describedmay be made Without departing from the spirit of my invention orsacrificing its advantages.

Having fully described my invention, 1 claim as new and desire to secureby Letters Patent An alarm of the character described comprising abase-plate 5, adapted to be secured to a suitable support and providedwith standards 7, which are connected at the tops or outer ends by acurved plate 8, a spring 9 secured to the under side thereof, saidstandard 6 being provided with flanges 10, an arm 12 pivotally mountedin said flanges, a sup plemental plate 13 secured to the said standard7, an angular support 1i soldered thereto on one arm of which the freeend of said pivoted arm 12 is adapted to rest, the solder forming theconnection between said plates 13 and 14c being adapted to fuse at apredetermined degree of heat, an oblong plate 16 secured to andinsulated from the base-plate 5 and provided at one end with an arm17-", a binding-post 18 mounted thereon, said plate 10 being provided atthe opposite end with an angular arm 19 adapted to engage the said arm12 when not engaged by the said angular arm a binding-screw secured toone of said flanges and wires connecting said bindingscrews with abattery and with an electric arm, substantially as and for the purposedescribed.

In testimony that I claim the foregoing as i'nyinvention I have signedmy name, in presence of the subscribingwitn esses, this 7th day of May,1897.

GEORGE A. TOWNSEND.

\Vitnesses:

CHAS. A. liiol innuan, FRANK PATRICK BAKER.

